Overview
We are growing our engineering team and on the lookout for new senior software engineers to take our company to the next level. This isn't a typical cog-in-the-machine role. If you're a high achiever who wants meaningful work with the best and brightest and don’t need to be handheld, this may be the job for you. Freelancer offers a globally diverse set of internet-scale challenges with real responsibility and opportunities to learn and advance within a meritocracy that promotes from within. Our mission is to provide one billion jobs, creating opportunity and income for people around the world. Freelancer.com is an Alexa top 1000 website with a cutting-edge frontend stack (Angular, TypeScript, RxJS) and a backend powering a large global marketplace (messaging, payments, translations, file services, and a notification system sending millions of notifications per hour). We deploy code to production multiple times a day.
The Role
As a Senior Software Engineer you are a skilled technical expert who drives architectural decisions and engineering quality within your team. You will lead by influence, raise the bar for engineering practices, and own delivery of complex projects end to end.
What you will do
* Design and build high-quality software that scales globally and is a joy to operate.
* Lead architectural decisions for your team and adjacent projects, balancing correctness, simplicity, and speed.
* Optimize, debug, and harden complex systems across the stack, from data models to deployment pipelines.
* Proactively improve performance, reliability, security, and cost efficiency.
* Champion best practices — testing, code quality, observability, incident response, and post-incident learning.
* Share knowledge, mentor engineers, and help close skill gaps across the team.
* Communicate risk, trade-offs, and progress clearly to stakeholders and push back when necessary.
* Contribute to interview loops and help us hire outstanding engineers.
What you bring
Must haves:
* 5+ years of software engineering experience with a track record of shipping complex systems.
* Tertiary degree in Computer Science or Engineering (or related).
* Strong proficiency in one or more backend languages such as Go, Python, PHP, or Node.js.
* Solid SQL and relational database skills, preferably MySQL, including sound data modelling.
* Background or strong interest in web engineering at scale.
* Experience in agile, continuously shipping teams.
* Linux proficiency and comfort with command-line tooling.
* Cloud experience, preferably AWS.
* Excellent written and verbal communication.
* Ownership mindset, ability to self-manage, and demonstrated continuous learning.
* Strong troubleshooting and creative problem solving.
Nice to haves:
* Service-oriented or microservice architecture and containerisation experience.
* Experience building public-facing APIs.
* Modern JavaScript framework experience such as Angular, React, or Vue, plus TypeScript.
* Strong knowledge of computer networking.
* Sound understanding of OWASP and web security best practices.
* Strong academic achievements, MS or PhD.
* A GitHub profile with substantive open-source contributions.
Signals you are a great fit
* You have led delivery of a big project and can explain the reasoning behind key trade-offs.
* You have influenced technical decisions without direct managerial power.
* You have helped define coding standards or best practices.
* You have owned a service or major code area and handled a significant incident professionally.
* Peers and leaders recognise you as an exceptional engineer.
Growth and Impact
We are a meritocracy. Exceptional performance is recognised with accelerated responsibility and scope, with clear pathways into broader technical leadership across teams. If you are already operating beyond the Senior level, we will calibrate accordingly.
Benefits
* A meritocratic culture with the ability to take ownership and fast track your career growth.
* You will be working on an Alexa top ranked website, solving complex, internet-scale and global problems in product & engineering with over 80 million customers across 247 countries, regions & territories.
* Fully stocked kitchen and beer taps, complemented by a bar with a breathtaking view.
* Delicious Friday lunches from a rotating selection of local restaurants.
* Engaging Weekly Town Halls with global presentations and open Q&A sessions with our CEO.
* Hackathons — quarterly events where teams create solutions to existing problems and win prizes.
* Regular team building events and activities.
* Located at Grosvenor Place - Home of Freelancer HQ, offering harbour views and related activities.
We're solving one of humanity's hardest problems: connecting talent to opportunity. If you want your engineering skill to matter beyond the codebase, to genuinely shift what's possible for millions, join us.
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